Kin Score facet
Discoverability
10% of the composite
12 checks · 54 points
discoverability
Can the API be found and understood from machine-readable metadata alone? Driven by apis.yml completeness, tagging, and identity signals.
27,504providers scored on it
27,504score above zero
59.1mean sub-score
57.4median sub-score
0at 100
How it is scored
12 checks worth 54 points, grouped by the artifact each one reads. A facet's sub-score is its awarded points normalized against the points that were actually applicable to that provider — a check needing an artifact the provider does not publish at all is N/A, and leaves both sides of the fraction.
apis.yml ·
apis_yml| Check | Rule | Points |
|---|---|---|
| Publishes an apis.yml indexThe provider maintains a real APIs.json index rather than being catalogued from the outside. The single highest-value discoverability signal: it is the difference between a provider describing itself and being described. | source_filename == "apis.yml" | 10 |
| Substantive descriptionAt least 200 characters of description. Enough for a human or an agent to decide whether the API is relevant without opening the site. | len(description) >= 200 | 5 |
| Tagged for discoveryFive or more tags. Tags are how the API surfaces in topical search and how it gets placed into industries and areas rather than sitting unclassified. | len(tags) >= 5 | 5 |
| Provider imageA logo or image is referenced, so the provider renders as a recognizable card in search results and listings instead of a bare line of text. | image is set | 2 |
| Named maintainerA contactable maintainer email. Establishes that someone owns the index and gives consumers a route to reach them. | maintainers[0].email is set | 3 |
| Created and modified datesBoth timestamps present as ISO dates, so freshness is machine-readable and a consumer can tell a maintained index from an abandoned one. | created and modified both ISO dates | 2 |
| Indexes three or more APIsThe index covers a real surface rather than a single endpoint — evidence the provider is cataloguing their whole platform. | api_count >= 3 | 3 |
| Human URL on every APIEach indexed API points at documentation a person can read. Without it, an entry is a name with nowhere to go. | every api has humanURL | 5 |
| Base URL on every APIEach indexed API declares a real, callable base URL. A localhost base URL fails this check — it signals a spec that was published without ever being pointed at production. | every api has baseURL and no baseURL contains "localhost" | 5 |
| Serves a .well-known surfaceThe provider serves machine entrypoints at RFC 8615 well-known paths — an api-catalog linkset (RFC 9727), a security.txt, an OAuth protected-resource document. This is the address an agent tries FIRST, before it has read anything, and it is the discoverability signal a marketing site cannot fake. | well-known/ carries an api-catalog, security.txt, a protected-resource doc, or an AAuth resource doc | 6 |
| Publishes llms.txtAn llms.txt — the provider stating, in a machine-readable file at a conventional path, what a language model should read to understand the product. Young, unratified, and adopted by 6,012 providers in this catalog, which makes it the fastest-moving machine-discoverability signal there is. | llms/ carries an llms.txt THE PROVIDER wrote, or a declared LLMsTxt pointer | 4 |
| Self-hosts the APIs.json indexThe provider serves its own APIs.json index from its own domain rather than being catalogued from the outside. `apis_yml_present` above rewards the index existing; this rewards the provider OWNING it — the difference between describing yourself and being described. | apis.yml url points at a host the provider controls, not the catalog | 4 |
How the catalog distributes on it
Every one of the 27,504 providers this facet is scored on, bucketed by sub-score.
90-10017 · 0.1%
75-89.94,736 · 17.2%
50-74.920,719 · 75.3%
25-49.92,032 · 7.4%
0.1-24.90 · 0.0%
00 · 0.0%
Top providers
The top 500 of 27,504 providers scoring above zero on this facet, ranked by facet sub-score, ties broken by composite.
1
Xquik94.4
89.3exemplar
2
We > Ultrarich94.4
59.9strong
3
BestPrice Agent Commerce94.4
34.0thin
4
Centric Brands94.4
20.9emerging
5
Ada92.6
74.0exemplar
6
APIs.io92.6
71.0exemplar
7
Strivacity92.6
66.8exemplar
8
1Lookup92.6
61.9strong
9
Cardlytics92.6
54.6strong
10
Allo-Media92.6
49.1developing
11
Sovrn92.6
48.9developing
12
BTC War Live Market Data API92.6
47.9developing
13
Treez92.6
46.7developing
14
ChargeAfter92.6
45.0developing
15
CREA (REALTOR.ca)92.6
41.7developing
16
Epsilon92.6
34.4thin
17
Supercell92.6
16.5emerging
18
Kraken88.9
72.2exemplar
19
Prismic88.9
69.2exemplar
20
Azure Database for MySQL88.9
51.1developing
21
Azure Migrate88.9
51.1developing
22
Azure Maps88.9
50.6developing
23
Checkmarx88.9
48.6developing
24
Google Forms88.9
44.4developing
25
AutoCAD88.9
43.9developing
26
Teradata88.9
42.3developing
27
Facebook88.9
41.0developing
28
Nasdaq Data Link88.9
38.6thin
29
Telefon88.9
35.9thin
30
Nasdaq88.9
33.4thin
31
Nylas87.0
75.7exemplar
32
Optimizely87.0
72.5exemplar
33
Swisscom87.0
65.8strong
34
Candid Health87.0
65.6strong
35
StayingAPI87.0
63.6strong
36
CycleCalcs87.0
63.5strong
37
Optum87.0
62.6strong
38
Zillapi87.0
62.6strong
39
Taskfolk87.0
60.7strong
40
ModMed87.0
57.6strong
41
Endeavour Energy87.0
51.8developing
42
U.S. Department of Transportation87.0
50.6developing
43
OpenSERP87.0
50.2developing
44
UK Civil Aviation Authority87.0
47.1developing
45
RouterPlex87.0
45.2developing
46
Linktree87.0
44.7developing
47
Wikisource87.0
41.6developing
48
Landing87.0
40.9developing
49
WAODAO87.0
38.6thin
50
Cuein87.0
33.8thin
51
Datum87.0
33.0thin
52
Melorra87.0
23.1emerging
53
AlphaLoops FMCSA Carrier Data API85.2
67.9exemplar
54
Landgate85.2
49.4developing
55
Friedrich-Alexander-Universität Erlangen-Nürnberg85.2
36.2thin
56
IBANforge85.2
32.4thin
57
Norwegian University of Science and Technology85.2
31.1thin
58
Salesforce Marketing Cloud83.3
78.4exemplar
59
OpenSanctions83.3
74.5exemplar
60
Mailboxlayer83.3
72.6exemplar
61
Postman83.3
67.2exemplar
62
Apigee83.3
65.7strong
63
Elastic Stack (ELK Stack)83.3
65.1strong
64
Google Tag Manager83.3
64.7strong
65
Pexafy83.3
64.2strong
66
Microsoft Outlook83.3
64.0strong
67
OpenWeatherMap83.3
63.5strong
68
Erxes83.3
63.0strong
69
MyStars FaaS83.3
62.0strong
70
JFrog83.3
56.6strong
71
Intrinio83.3
56.3strong
72
Brandwatch83.3
52.1developing
73
Everbridge83.3
49.2developing
74
Azure Load Balancer83.3
46.3developing
75
Azure Logic Apps83.3
46.3developing
76
Azure Machine Learning83.3
46.3developing
77
Gremlin83.3
45.4developing
78
The New York Times Company83.3
43.1developing
79
Tesla83.3
39.6developing
80
Lloyd's of London83.3
35.6thin
81
Citigroup83.3
30.0thin
82
Elk83.3
29.6thin
83
OpenMercantil81.5
86.4exemplar
84
Brevo81.5
84.4exemplar
85
Stedi81.5
83.0exemplar
86
1upHealth81.5
76.0exemplar
87
Power Query81.5
75.2exemplar
88
eClinicalWorks81.5
74.5exemplar
89
AfterShip81.5
72.5exemplar
90
AWeber81.5
72.5exemplar
91
Pluralsight81.5
72.4exemplar
92
Postmark81.5
72.2exemplar
93
Paubox81.5
72.1exemplar
94
Meltwater81.5
71.2exemplar
95
LaunchDarkly81.5
71.0exemplar
96
DeBounce81.5
69.9exemplar
97
LINE81.5
69.5exemplar
98
6sense81.5
69.4exemplar
99
Klarna81.5
69.3exemplar
100
Coresignal81.5
68.9exemplar
101
Vidyard81.5
68.8exemplar
102
Plaid81.5
68.7exemplar
103
Tealium81.5
68.3exemplar
104
Google Search Console81.5
68.3exemplar
105
fal81.5
68.2exemplar
106
Independence Blue Cross81.5
67.7exemplar
107
API Evangelist81.5
67.6exemplar
108
Omnisend81.5
67.3exemplar
109
Captions81.5
66.6exemplar
110
Akuity81.5
66.4strong
111
Tvarka ATK API81.5
66.3strong
112
Brand API (Brandfetch)81.5
66.3strong
113
Google Analytics 481.5
66.2strong
114
Memo Bank81.5
66.2strong
115
Solidus Labs81.5
66.0strong
116
Mirakl81.5
65.5strong
117
Instantly81.5
65.5strong
118
Lili81.5
65.4strong
119
Tvarka ATK API81.5
65.2strong
120
Dow Jones81.5
65.1strong
121
Common Room81.5
65.1strong
122
Simon Data81.5
65.0strong
123
instacart81.5
65.0strong
124
lemlist81.5
65.0strong
125
Virto Commerce81.5
64.9strong
126
Heroic Labs81.5
64.9strong
127
Clear Street81.5
64.9strong
128
Enrich81.5
64.8strong
129
DataForSEO81.5
64.5strong
130
Amazon Clean Rooms81.5
64.5strong
131
Unify81.5
64.5strong
132
Epic Systems81.5
64.4strong
133
Postiz81.5
64.3strong
134
anecdotes81.5
64.0strong
135
Gong81.5
63.8strong
136
Refuel81.5
63.6strong
137
Grafana Loki81.5
63.5strong
138
Singular81.5
63.3strong
139
Celonis81.5
63.3strong
140
Chili Piper81.5
62.9strong
141
Ahrefs81.5
62.8strong
142
Landing.ai81.5
62.8strong
143
Northbeam81.5
62.7strong
144
Mailmodo81.5
62.5strong
145
Yoast81.5
62.5strong
146
Scope381.5
62.4strong
147
StackAdapt81.5
62.3strong
148
Antavo81.5
62.1strong
149
Aidbox81.5
62.1strong
150
Valimail81.5
62.1strong
151
Dwolla81.5
61.8strong
152
Validic81.5
61.7strong
153
MediaValet81.5
61.5strong
154
Practice Fusion81.5
61.4strong
155
Corti81.5
61.3strong
156
Lucid81.5
61.3strong
157
Browser Use81.5
61.2strong
158
Algolia81.5
61.1strong
159
Oneschema81.5
61.1strong
160
Storylane81.5
61.1strong
161
Extole81.5
60.9strong
162
Infer by Flow781.5
60.9strong
163
Exclaimer81.5
60.7strong
164
RocketReach81.5
60.7strong
165
Solo.io81.5
60.7strong
166
Bazaarvoice81.5
60.5strong
167
Nexla81.5
60.5strong
168
Zaius81.5
60.2strong
169
Red Hat Ansible Automation Platform81.5
60.0strong
170
Kentico81.5
60.0strong
171
Weavr81.5
59.9strong
172
Bolt Financial81.5
59.9strong
173
OutSystems81.5
59.8strong
174
Acronis81.5
59.8strong
175
Creatio81.5
59.5strong
176
Vitally81.5
59.4strong
177
Nutshell81.5
59.4strong
178
Crawl4AI81.5
58.8strong
179
Factiva81.5
58.8strong
180
Triple Whale81.5
58.8strong
181
Suki AI81.5
58.7strong
182
Lukka81.5
58.6strong
183
Paymentsense81.5
58.6strong
184
RB2B81.5
58.5strong
185
Reapit81.5
58.1strong
186
LeanData81.5
58.1strong
187
AdRoll81.5
57.9strong
188
Epsilon381.5
57.8strong
189
Wunderkind81.5
57.7strong
190
Chef Software81.5
57.5strong
191
Ocrolus81.5
57.5strong
192
TextQL81.5
57.4strong
193
Blockchain.com81.5
57.2strong
194
G281.5
57.2strong
195
Feedly81.5
57.1strong
196
Coda Payments81.5
57.1strong
197
SpyFu81.5
57.0strong
198
Rainforest81.5
56.8strong
199
Modulate81.5
56.6strong
200
Allscripts81.5
56.6strong
201
Knak81.5
56.5strong
202
NextRoll81.5
56.4strong
203
Criteo81.5
56.4strong
204
Optoro81.5
56.3strong
205
SolarEdge81.5
56.2strong
206
Moveworks81.5
56.1strong
207
Conviva81.5
55.9strong
208
Fat Zebra81.5
55.8strong
209
Kore.ai81.5
55.7strong
210
Sourcepoint81.5
55.6strong
211
FinGoal81.5
55.6strong
212
mParticle81.5
55.5strong
213
Human API81.5
55.4strong
214
SLNG81.5
55.4strong
215
Amberdata81.5
55.3strong
216
Bandwidth81.5
55.3strong
217
Insforge81.5
55.2strong
218
Learnosity81.5
55.2strong
219
Lakekeeper81.5
55.2strong
220
Spiko81.5
55.0strong
221
Copper.co81.5
54.8strong
222
Funnel81.5
54.8strong
223
Sylvia API81.5
54.8strong
224
Sendoso81.5
54.7strong
225
Daloopa81.5
54.7strong
226
LaserData81.5
54.7strong
227
Salsify81.5
54.7strong
228
IPGeolocation.io81.5
54.6strong
229
Klasha81.5
54.6strong
230
ASAPP81.5
54.5strong
231
LawVu81.5
54.4strong
232
Tackle81.5
54.4strong
233
Osano81.5
54.4strong
234
Bright Pattern81.5
54.3strong
235
MyCarrier81.5
54.3strong
236
Dojo81.5
54.3strong
237
SIMBA Chain81.5
54.3strong
238
Microsoft Teams81.5
54.2developing
239
Permutive81.5
54.2developing
240
Flipdish81.5
54.0developing
241
Coval81.5
53.9developing
242
Neon Commerce81.5
53.9developing
243
Livepeer81.5
53.9developing
244
Kubeshop81.5
53.9developing
245
PPRO81.5
53.8developing
246
Akoya81.5
53.8developing
247
first direct81.5
53.8developing
248
Lean Technologies81.5
53.7developing
249
Sygnum81.5
53.7developing
250
Leia81.5
53.7developing
251
Ondo Finance81.5
53.7developing
252
Picsart81.5
53.6developing
253
Leadpages81.5
53.6developing
254
VigLink (Sovrn Commerce)81.5
53.5developing
255
ChannelEngine81.5
53.5developing
256
Kissmetrics81.5
53.4developing
257
Zype81.5
53.4developing
258
IRONSCALES81.5
53.4developing
259
Propel Software (Propel PLM)81.5
53.4developing
260
JPX (Japan Exchange Group)81.5
53.4developing
261
Crowd.dev81.5
53.4developing
262
Spare81.5
53.4developing
263
SHOPLINE81.5
53.4developing
264
Upgrade81.5
53.3developing
265
Kredivo81.5
53.2developing
266
Snap81.5
53.2developing
267
APOLLO Insurance81.5
53.2developing
268
SUPER STUDIO81.5
53.1developing
269
Emotive81.5
53.0developing
270
Binance.US81.5
52.8developing
271
Spark Platform81.5
52.5developing
272
Bria81.5
52.4developing
273
Conta Azul81.5
52.4developing
274
Koin81.5
52.4developing
275
TraceLink81.5
52.4developing
276
H181.5
52.4developing
277
Satispay81.5
52.3developing
278
Semble81.5
52.2developing
279
Authenticx81.5
52.2developing
280
Inspectorio81.5
52.2developing
281
Hotmart81.5
52.1developing
282
AltScore81.5
52.1developing
283
Wallapop81.5
52.1developing
284
Bluecore81.5
52.0developing
285
Tailor81.5
52.0developing
286
Zenoss81.5
52.0developing
287
360Learning81.5
51.8developing
288
LoudCrowd81.5
51.8developing
289
ABBYY81.5
51.8developing
290
Simplismart81.5
51.7developing
291
Solvimon81.5
51.7developing
292
Cognism81.5
51.6developing
293
Microsoft Power Automate81.5
51.6developing
294
Pixee81.5
51.6developing
295
PicsArt (Socialin)81.5
51.5developing
296
Amazon81.5
51.5developing
297
Azupay81.5
51.3developing
298
GumGum81.5
51.3developing
299
Pixeltable81.5
51.3developing
300
Splio81.5
51.3developing
301
PEXA81.5
51.2developing
302
OptinMonster81.5
51.2developing
303
RegScale81.5
51.2developing
304
ShipMonk81.5
51.0developing
305
Standard Metrics81.5
51.0developing
306
CoinGecko81.5
50.9developing
307
Bond81.5
50.8developing
308
Button81.5
50.8developing
309
Nextiva81.5
50.8developing
310
Siro81.5
50.8developing
311
Kyber Network81.5
50.8developing
312
SonarSource81.5
50.7developing
313
DexCare81.5
50.7developing
314
SearchApi81.5
50.7developing
315
Agicap81.5
50.6developing
316
Freight Waves81.5
50.5developing
317
Monte Carlo81.5
50.5developing
318
MCP36081.5
50.4developing
319
Nayya81.5
50.4developing
320
Zyte81.5
50.4developing
321
Cardstream81.5
50.3developing
322
Trustpilot81.5
50.3developing
323
Typeface81.5
50.3developing
324
Monetate81.5
50.2developing
325
Nfon81.5
50.1developing
326
Pinoffer81.5
50.0developing
327
Fusio81.5
49.9developing
328
Paperless Parts81.5
49.9developing
329
Swap81.5
49.8developing
330
Appsamurai81.5
49.8developing
331
Coins.ph81.5
49.7developing
332
Yelp81.5
49.7developing
333
ACI Worldwide81.5
49.6developing
334
Virtru81.5
49.5developing
335
Verisoul81.5
49.5developing
336
Qure.ai81.5
49.3developing
337
DomainTools81.5
49.2developing
338
Deepgram81.5
49.2developing
339
WorkSpan81.5
49.1developing
340
Amazon Fargate81.5
49.1developing
341
Moxe Health81.5
49.1developing
342
Weatherbys Bank81.5
49.1developing
343
Alasco81.5
49.1developing
344
Enigma81.5
49.0developing
345
Cadana81.5
48.9developing
346
Signiant81.5
48.9developing
347
Traveloka81.5
48.9developing
348
B381.5
48.9developing
349
Dotfile81.5
48.8developing
350
INRIX81.5
48.8developing
351
Tata Communications81.5
48.7developing
352
Trellix Web Gateway81.5
48.7developing
353
Picus Security81.5
48.6developing
354
JFrog Artifactory81.5
48.6developing
355
Dialect81.5
48.6developing
356
Skedulo81.5
48.5developing
357
JAMF81.5
48.5developing
358
Avito81.5
48.4developing
359
Devoted Health81.5
48.3developing
360
CustomerOS81.5
48.2developing
361
Hivemapper81.5
48.2developing
362
TinyFish81.5
48.1developing
363
Episerver81.5
48.1developing
364
MNTN81.5
48.0developing
365
Sun Life81.5
48.0developing
366
Virtana (Virtual Instruments)81.5
48.0developing
367
PowerReviews81.5
47.9developing
368
Chronosphere81.5
47.9developing
369
StepFun81.5
47.8developing
370
Synack81.5
47.6developing
371
Enigma Analytics81.5
47.6developing
372
Bigeye81.5
47.6developing
373
Stack Exchange81.5
47.4developing
374
Toqio81.5
47.4developing
375
Proactis81.5
47.3developing
376
Confident LIMS81.5
47.3developing
377
DealHub81.5
47.2developing
378
Emerge81.5
47.2developing
379
OSFI81.5
47.0developing
380
Cure Hydration81.5
47.0developing
381
Spot AI81.5
46.9developing
382
Truecaller81.5
46.9developing
383
Quinyx81.5
46.9developing
384
Virtuosis Voice Biomarker API81.5
46.8developing
385
StubHub81.5
46.7developing
386
Komerce81.5
46.7developing
387
LEEO Insurance Services81.5
46.7developing
388
Cable81.5
46.7developing
389
Horizon Blockchain Games81.5
46.6developing
390
Disconetwork81.5
46.6developing
391
Lightstream81.5
46.6developing
392
RunBuggy81.5
46.6developing
393
Truex Media81.5
46.6developing
394
Worldpay81.5
46.5developing
395
Chord81.5
46.5developing
396
LendKey81.5
46.4developing
397
TMT ID81.5
46.3developing
398
Trato81.5
46.3developing
399
Digital Asset81.5
46.2developing
400
C. Hoare & Co.81.5
46.2developing
401
Coinbase Global81.5
46.1developing
402
Result81.5
45.9developing
403
Dotdash Meredith / People Inc81.5
45.7developing
404
Amberflo81.5
45.6developing
405
Magic Eden81.5
45.6developing
406
SkimBit81.5
45.5developing
407
Leap81.5
45.4developing
408
ClearBank81.5
45.3developing
409
Timeular81.5
45.3developing
410
Kelvin81.5
45.3developing
411
Rollbar81.5
45.3developing
412
CrossEngage81.5
45.2developing
413
The New York Times81.5
45.2developing
414
Brooklinen81.5
45.1developing
415
Workday Extend81.5
45.1developing
416
iSports API81.5
45.0developing
417
Pax881.5
45.0developing
418
Cerby81.5
44.9developing
419
Crunchbase81.5
44.8developing
420
Azure OpenAI Service81.5
44.8developing
421
KeyCorp81.5
44.5developing
422
Recursal AI, Inc.81.5
44.5developing
423
Capital One81.5
44.4developing
424
Brandcast81.5
44.4developing
425
Nexthink81.5
44.4developing
426
LBank81.5
44.4developing
427
Umbra81.5
44.3developing
428
Aisera81.5
44.3developing
429
Confident Cannabis81.5
44.3developing
430
Laminar81.5
44.3developing
431
Lido Finance81.5
44.3developing
432
Microsoft Edge81.5
44.2developing
433
Sfox81.5
44.2developing
434
Opera81.5
44.1developing
435
Teya81.5
43.9developing
436
Revinate81.5
43.8developing
437
Upsie81.5
43.8developing
438
Leena AI81.5
43.8developing
439
Lithium Technologies81.5
43.8developing
440
Trail81.5
43.7developing
441
Kotoba81.5
43.7developing
442
Cubby81.5
43.7developing
443
Nutritionix81.5
43.6developing
444
Luminance81.5
43.6developing
445
FRAYT81.5
43.5developing
446
Button81.5
43.4developing
447
Chartbeat81.5
43.4developing
448
Kensho81.5
43.4developing
449
ColdSnap81.5
43.4developing
450
Mudrex81.5
43.4developing
451
Reprise81.5
43.4developing
452
Alleva81.5
43.3developing
453
Depict.AI81.5
43.3developing
454
NHS Digital81.5
43.3developing
455
ReqRes81.5
43.2developing
456
Hampden & Co81.5
43.2developing
457
SegMetrics81.5
43.2developing
458
Newcastle Permanent Building Society81.5
43.1developing
459
On2481.5
43.0developing
460
Mysten Labs81.5
43.0developing
461
Noyo81.5
43.0developing
462
AESO81.5
42.9developing
463
itslearning81.5
42.9developing
464
Investec81.5
42.9developing
465
Precog81.5
42.9developing
466
Reson881.5
42.9developing
467
Wikipedia / MediaWiki81.5
42.9developing
468
Firebase81.5
42.8developing
469
Metabolon81.5
42.7developing
470
Strangeworks81.5
42.7developing
471
AMCS Group81.5
42.5developing
472
Shapeshift81.5
42.5developing
473
Pryon81.5
42.4developing
474
Prophecy.io81.5
42.4developing
475
Sensors Data81.5
42.3developing
476
Gardin81.5
42.3developing
477
Remberg81.5
42.1developing
478
Bombora81.5
42.1developing
479
target81.5
42.0developing
480
Mason81.5
42.0developing
481
Pypestream81.5
41.9developing
482
Roadsync81.5
41.9developing
483
Truist Financial81.5
41.9developing
484
Truto81.5
41.9developing
485
AdMakeAI81.5
41.9developing
486
Depict81.5
41.9developing
487
Nationwide Building Society81.5
41.9developing
488
Macrometa81.5
41.8developing
489
Thredd81.5
41.7developing
490
Cachet81.5
41.7developing
491
Bitvore81.5
41.6developing
492
Pepperdata81.5
41.6developing
493
Deno81.5
41.5developing
494
Maven Machines81.5
41.4developing
495
AniList81.5
41.4developing
496
Monument Bank81.5
41.3developing
497
Verato81.5
41.3developing
498
Cosmo Tech81.5
41.2developing
499
GroundTruth81.5
41.2developing
500
ThunderCore81.5
41.2developing
The other 7 facets
Contract QualityAccess ClarityDeveloper ErgonomicsOperational TransparencyContract GovernanceDiscoverabilityRegulatory PostureOpen Source Surface
Machine-Readable ContractAgentic Access ContractDocumented ReversibilityMCP ServerMachine-Readable AuthIdempotencyStable Error SemanticsRequest/Response ExamplesRate-Limit SignalingTyped Event SurfaceAgent SkillsWell-Known CatalogConsent & Bot IdentityA2A Agent CardDry-Run / Simulate ModeDelegated User IdentityProtected Resource MetadataRegistration Without a HumanAgentic Commerce Surface
Move this number. Every provider in the catalog is profiled from a public repository at
Scored on rubric v0.17.2 across 27,504 providers · lists rebuilt 2026-09-01 · capped at the top 500 per page.
github.com/api-evangelist/<provider>, and each check above names the exact artifact it
reads. Publish the artifact, open a pull request, and the next scoring run picks it up — no gatekeeping
and no fee. The full rubric is at apis.io/rating/, and
prioritized profiling
is the fast lane if you would rather have it done for you.
Scored on rubric v0.17.2 across 27,504 providers · lists rebuilt 2026-09-01 · capped at the top 500 per page.